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174 lines
4.7 KiB
174 lines
4.7 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* This file is part of wl18xx |
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* |
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* Copyright (C) 2011 Texas Instruments Inc. |
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*/ |
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#include "../wlcore/wlcore.h" |
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#include "../wlcore/cmd.h" |
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#include "../wlcore/debug.h" |
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#include "../wlcore/acx.h" |
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#include "../wlcore/tx.h" |
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#include "wl18xx.h" |
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#include "tx.h" |
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static |
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void wl18xx_get_last_tx_rate(struct wl1271 *wl, struct ieee80211_vif *vif, |
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u8 band, struct ieee80211_tx_rate *rate, u8 hlid) |
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{ |
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u8 fw_rate = wl->links[hlid].fw_rate_idx; |
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if (fw_rate > CONF_HW_RATE_INDEX_MAX) { |
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wl1271_error("last Tx rate invalid: %d", fw_rate); |
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rate->idx = 0; |
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rate->flags = 0; |
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return; |
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} |
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if (fw_rate <= CONF_HW_RATE_INDEX_54MBPS) { |
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rate->idx = fw_rate; |
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if (band == NL80211_BAND_5GHZ) |
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rate->idx -= CONF_HW_RATE_INDEX_6MBPS; |
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rate->flags = 0; |
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} else { |
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rate->flags = IEEE80211_TX_RC_MCS; |
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rate->idx = fw_rate - CONF_HW_RATE_INDEX_MCS0; |
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/* SGI modifier is counted as a separate rate */ |
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if (fw_rate >= CONF_HW_RATE_INDEX_MCS7_SGI) |
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(rate->idx)--; |
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if (fw_rate == CONF_HW_RATE_INDEX_MCS15_SGI) |
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(rate->idx)--; |
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/* this also covers the 40Mhz SGI case (= MCS15) */ |
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if (fw_rate == CONF_HW_RATE_INDEX_MCS7_SGI || |
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fw_rate == CONF_HW_RATE_INDEX_MCS15_SGI) |
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rate->flags |= IEEE80211_TX_RC_SHORT_GI; |
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if (fw_rate > CONF_HW_RATE_INDEX_MCS7_SGI && vif) { |
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struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif); |
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if (wlvif->channel_type == NL80211_CHAN_HT40MINUS || |
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wlvif->channel_type == NL80211_CHAN_HT40PLUS) { |
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/* adjustment needed for range 0-7 */ |
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rate->idx -= 8; |
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rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; |
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} |
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} |
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} |
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} |
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static void wl18xx_tx_complete_packet(struct wl1271 *wl, u8 tx_stat_byte) |
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{ |
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struct ieee80211_tx_info *info; |
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struct sk_buff *skb; |
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int id = tx_stat_byte & WL18XX_TX_STATUS_DESC_ID_MASK; |
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bool tx_success; |
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struct wl1271_tx_hw_descr *tx_desc; |
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/* check for id legality */ |
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if (unlikely(id >= wl->num_tx_desc || wl->tx_frames[id] == NULL)) { |
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wl1271_warning("illegal id in tx completion: %d", id); |
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return; |
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} |
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/* a zero bit indicates Tx success */ |
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tx_success = !(tx_stat_byte & BIT(WL18XX_TX_STATUS_STAT_BIT_IDX)); |
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skb = wl->tx_frames[id]; |
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info = IEEE80211_SKB_CB(skb); |
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tx_desc = (struct wl1271_tx_hw_descr *)skb->data; |
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if (wl12xx_is_dummy_packet(wl, skb)) { |
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wl1271_free_tx_id(wl, id); |
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return; |
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} |
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/* update the TX status info */ |
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if (tx_success && !(info->flags & IEEE80211_TX_CTL_NO_ACK)) |
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info->flags |= IEEE80211_TX_STAT_ACK; |
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/* |
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* first pass info->control.vif while it's valid, and then fill out |
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* the info->status structures |
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*/ |
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wl18xx_get_last_tx_rate(wl, info->control.vif, |
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info->band, |
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&info->status.rates[0], |
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tx_desc->hlid); |
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info->status.rates[0].count = 1; /* no data about retries */ |
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info->status.ack_signal = -1; |
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if (!tx_success) |
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wl->stats.retry_count++; |
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/* |
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* TODO: update sequence number for encryption? seems to be |
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* unsupported for now. needed for recovery with encryption. |
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*/ |
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/* remove private header from packet */ |
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skb_pull(skb, sizeof(struct wl1271_tx_hw_descr)); |
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/* remove TKIP header space if present */ |
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if ((wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE) && |
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info->control.hw_key && |
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info->control.hw_key->cipher == WLAN_CIPHER_SUITE_TKIP) { |
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int hdrlen = ieee80211_get_hdrlen_from_skb(skb); |
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memmove(skb->data + WL1271_EXTRA_SPACE_TKIP, skb->data, hdrlen); |
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skb_pull(skb, WL1271_EXTRA_SPACE_TKIP); |
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} |
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wl1271_debug(DEBUG_TX, "tx status id %u skb 0x%p success %d", |
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id, skb, tx_success); |
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/* return the packet to the stack */ |
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skb_queue_tail(&wl->deferred_tx_queue, skb); |
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queue_work(wl->freezable_wq, &wl->netstack_work); |
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wl1271_free_tx_id(wl, id); |
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} |
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void wl18xx_tx_immediate_complete(struct wl1271 *wl) |
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{ |
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struct wl18xx_fw_status_priv *status_priv = |
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(struct wl18xx_fw_status_priv *)wl->fw_status->priv; |
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struct wl18xx_priv *priv = wl->priv; |
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u8 i, hlid; |
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/* nothing to do here */ |
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if (priv->last_fw_rls_idx == status_priv->fw_release_idx) |
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return; |
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/* update rates per link */ |
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hlid = wl->fw_status->counters.hlid; |
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if (hlid < WLCORE_MAX_LINKS) { |
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wl->links[hlid].fw_rate_idx = |
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wl->fw_status->counters.tx_last_rate; |
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wl->links[hlid].fw_rate_mbps = |
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wl->fw_status->counters.tx_last_rate_mbps; |
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} |
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/* freed Tx descriptors */ |
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wl1271_debug(DEBUG_TX, "last released desc = %d, current idx = %d", |
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priv->last_fw_rls_idx, status_priv->fw_release_idx); |
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if (status_priv->fw_release_idx >= WL18XX_FW_MAX_TX_STATUS_DESC) { |
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wl1271_error("invalid desc release index %d", |
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status_priv->fw_release_idx); |
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WARN_ON(1); |
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return; |
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} |
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for (i = priv->last_fw_rls_idx; |
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i != status_priv->fw_release_idx; |
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i = (i + 1) % WL18XX_FW_MAX_TX_STATUS_DESC) { |
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wl18xx_tx_complete_packet(wl, |
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status_priv->released_tx_desc[i]); |
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wl->tx_results_count++; |
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} |
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priv->last_fw_rls_idx = status_priv->fw_release_idx; |
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}
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